Results 61 to 70 of about 6,421 (225)

Early Lightcurves of Type Ia Supernovae Are Consistent with Nondegenerate Progenitor Companions

The Astrophysical Journal
If Type Ia supernovae (SNe Ia) result from a white dwarf being ignited by Roche-lobe overflow from a nondegenerate companion, then as the SN explosion runs into the companion star its ejecta will be shocked, causing an early blue excess in the lightcurve.
J. Burke, M. Andrews, D. A. Howell, D. J. Sand, R. C. Amaro, P. J. Brown, J. E. Andrews, K. A. Bostroem, Y. Dong, J. Haislip, D. Hiramatsu, G. Hosseinzadeh, V. Kouprianov, M. J. Lundquist, C. McCully, C. Pellegrino, D. Reichart, L. Tartaglia, S. Valenti, S. Wyatt, S. Yang   +20 more
doaj   +1 more source

Propagating Uncertainties in the SALT3 Model-training Process to Cosmological Constraints

The Astrophysical Journal Supplement Series, 2023
Type Ia supernovae (SNe Ia) are standardizable candles that must be modeled empirically to yield cosmological constraints. To understand the robustness of this modeling to variations in the model-training procedure, we build an end-to-end pipeline to ...
M. Dai, D. O. Jones, W. D. Kenworthy, R. Kessler, J. D. R. Pierel, R. J. Foley, S. W. Jha, D. M. Scolnic   +7 more
doaj   +1 more source

Testing the Weak Cosmic Censorship Conjecture via Test Particle–Induced Overcharging/Overspinning of Kerr–Newman–Modified Gravity Black Hole

Advances in Astronomy, Volume 2026, Issue 1, 2026.
We examine the weak cosmic censorship conjecture (WCCC) violation by throwing a charged and rotating test particle into a Kerr–Newman–modified gravity black hole (KN–MOG BH). The result depends on several factors, such as the relative sign of the particle’s charge and its direction of rotation with respect to black hole (BH).
Waqar Ahmad, Abdul Rehman Kashif, Jose Gaite   +2 more
wiley   +1 more source

Seeking for the progenitors of Type Ia Supernovae [PDF]

AIP Conference Proceedings, 2009
The nature of the progenitor system[s] of Type Ia Supernovae is still unclear. In this contribution I review the projects that have been undertaken to answer this question and the results they have led to. The conclusion is that, as of today, we have reasonable guesses but none of them has yet been proven by direct observations.
F. Patat, Giuliana Giobbi, Amedeo Tornambe, Gabriella Raimondo, Marco Limongi, L. A. Antonelli, Nicola Menci, Enzo Brocato   +7 more
openaire   +2 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

SN 2022joj: A Potential Double Detonation with a Thin Helium Shell

The Astrophysical Journal
We present photometric and spectroscopic data for SN 2022joj, a nearby peculiar Type Ia supernova (SN Ia) with a fast decline rate (Δ m _15,B = 1.4 mag).
E. Padilla Gonzalez, D. A. Howell, G. Terreran, C. McCully, M. Newsome, J. Burke, J. Farah, C. Pellegrino, K. A. Bostroem, G. Hosseinzadeh, J. Pearson, D. J. Sand, M. Shrestha, N. Smith, Y. Dong, N. Meza Retamal, S. Valenti, S. Boos, K. J. Shen, D. Townsley, L. Galbany, L. Piscarreta, R. J. Foley, M. J. Bustamante-Rosell, D. A. Coulter, R. Chornock, K. W. Davis, C. B. Dickinson, D. O. Jones, J. Kutcka, X. K. Le Saux, C. R. Rojas-Bravo, K. Taggart, S. Tinyanont, G. Yang, S. W. Jha, R. Margutti   +36 more
doaj   +1 more source

Type Ia Supernova Light Curves [PDF]

The Astrophysical Journal, 2007
18 pages, submitted to ApJ on 8/18 ...
Woosley, S., Kasen, D., Blinnikov, S., Sorokina, E.   +3 more
openaire   +3 more sources

NtCML19 Is Recruited by Tobacco to Interact With the Deacetylase Protein RsDN3377 of Rhizoctonia solani AG3‐TB, Inhibiting Fungal Infection

Molecular Plant Pathology, Volume 26, Issue 11, November 2025.
The deacetylase RsDN3377 is recognised by the calcium‐binding protein NtCML19, which enhances host resistance against Rhizoctonia solani infection by inducing cell death and reactive oxygen species (ROS) accumulation. ABSTRACT The necrotrophic fungal pathogen Rhizoctonia solani anastomosis group 3 (AG3‐TB) is a major cause of global tobacco crop yield ...
Xinchun Li, Yan Li, He Liu, Mengnan An, Zihao Xia, Chong Zhang, Wenfu Chen, Yuanhua Wu   +7 more
wiley   +1 more source

Type Ia Supernovae: Energetics, Neutronization and Nucleosynthesis [PDF]

, 2007
The utility of Type Ia supernovae, not simply as probes of the distance scale but also as a means of constraining the properties of dark energy, demands a significant improvement in theoretical predictions of their properties in outburst. To this end, we
James W. Truran, Dean M. Townsley, Vladimirova, Natalia, Alan C. Calder, Truran, James W., Lamb, Donald Q., Donald Q. Lamb, Edward F. Brown, Ivo R. Seitenzahl, Natalia Vladimirova, Townsley, Dean M., Peng, Fang, Fang Peng, Seitenzahl, Ivo R., Calder, Alan C., Brown, Edward F.   +15 more
core   +1 more source

Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link among Type Iax Supernovae

The Astrophysical Journal
We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ( M _V = −16.81 ± 0.19 mag) Type Iax supernovae (SNe Iax) 2024pxl in NGC 6384.
Mridweeka Singh, Lindsey A. Kwok, Saurabh W. Jha, R. Dastidar, Conor Larison, Alexei V. Filippenko, Jennifer E. Andrews, Moira Andrews, G. C. Anupama, Prasiddha Arunachalam, Katie Auchettl, Dominik Bánhidi, Barnabas Barna, K. Azalee Bostroem, Thomas G. Brink, Régis Cartier, Ping Chen, Collin T. Christy, David A. Coulter, Sofia Covarrubias, Kyle W. Davis, Connor B. Dickinson, Yize Dong, Joseph Farah, Andreas Flörs, Ryan J. Foley, Noah Franz, Christoffer Fremling, Lluís Galbany, Anjasha Gangopadhyay, Aarna Garg, Elinor L. Gates, Or Graur, Alexa C. Gordon, Daichi Hiramatsu, Emily Hoang, D. Andrew Howell, Brian Hsu, Joel Johansson, Arti Joshi, Lordrick A. Kahinga, Ravjit Kaur, Sahana Kumar, Piramon Kumnurdmanee, Hanindyo Kuncarayakti, Natalie LeBaron, C. Lidman, Chang Liu, Keiichi Maeda, Kate Maguire, Bailey Martin, Curtis McCully, Darshana Mehta, Luca M. Menotti, Anne J. Metevier, A. A. Miller, Kuntal Misra, C. Tanner Murphey, Megan Newsome, Estefania Padilla Gonzalez, Kishore C. Patra, Jeniveve Pearson, Anthony L. Piro, Abigail Polin, Aravind P. Ravi, Armin Rest, Nabeel Rehemtulla, Nicolas Meza Retamal, O. M. Robinson, César Rojas-Bravo, Devendra K. Sahu, David J. Sand, Brian P. Schmidt, Steve Schulze, Michaela Schwab, Manisha Shrestha, Matthew R. Siebert, Sunil Simha, Nathan Smith, Jesper Sollerman, Shubham Srivastav, Bhagya M. Subrayan, Tamás Szalai, Kirsty Taggart, Rishabh Singh Teja, Jacco H. Terwel, Samaporn Tinyanont, Stefano Valenti, József Vinkó, Aya L. Westerling, J. Craig Wheeler, Yi Yang, WeiKang Zheng   +92 more
doaj   +1 more source